cause between female and male RCA connectors, you can very easily said 50% to let main board's video input to suddently connected to camera's ground which that is exactly the other terminal RCA's shielding ground.

ADI datasheet: "The decoupling capacitors should be located between the power plane and the power pin. Current should flow from the power plane to the capacitor to the power pin. Do not make the power connection between the capacitor and the power pin."

simple. electrical noise (that is 100% certain to be the reason of the bug) causes the video chip to stop functioning. one of the symptoms very easily observed of the failure is that the chip stops transmitting the 27MHz video clock to the FPGA.

"It's an EMI problem. It is possible to make the chip go into this condition without video signal (detected by monitoring the video clock) simply by making the ground of the camera cable touch the metal of the RCA plugs on the M1."

also the rc3, the newest layout on Y2 is close to parallel digital data which is i mostly concern already though but I have no hard data to know this, but surely those steps must be a test procedure on rc3 to record them.

lekernel: hmm, can you test the current that goes into the video chip when that happens ? seems a little odd that the xo alone would simply stop. not impossible, but i'd consider it much more likely that it just recovers after an upset.

the AD data sheet is confusing in this regard. first they say you should have one ground plane, then they tell you to split it. looks like two different engineers, one from the "one ground place to rule them all" camp, the other from the "one ground plane per current loop" camp wrote this. but that they agree on is that there should be a connection of some kind under the chip.